1912364 - Intermittent [TVw] KeyError: 'bidi.session.subscribe' | ValueError: Unknown action bidi.session.subscribe

Status: RESOLVED INCOMPLETE

(Testing :: web-platform-tests, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: smolnar [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=469795860&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/LwLLsu5ESkO2yr6bkGBOWQ/runs/0/artifacts/public/logs/live_backing.log

---

WARNING - Traceback (most recent call last):
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING -   File "D:\task_172315873629958\build\tests\web-platform\tests\tools\wptrunner\wptrunner\executors\base.py", line 766, in process_action
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING -     action_handler = self.actions[action]
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING -                      ~~~~~~~~~~~~^^^^^^^^
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING - KeyError: 'bidi.session.subscribe'
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING - 
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING - The above exception was the direct cause of the following exception:
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING - 
[task 2024-08-08T23:31:25.385Z] 23:31:25  WARNING - Traceback (most recent call last):
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -   File "D:\task_172315873629958\build\tests\web-platform\tests\tools\wptrunner\wptrunner\executors\executormarionette.py", line 898, in run_func
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -     self.result = True, self.func(self.protocol, self.url, self.timeout)
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -   File "D:\task_172315873629958\build\tests\web-platform\tests\tools\wptrunner\wptrunner\executors\executormarionette.py", line 1024, in do_testharness
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -     done, rv = handler(result)
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -                ^^^^^^^^^^^^^^^
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -   File "D:\task_172315873629958\build\tests\web-platform\tests\tools\wptrunner\wptrunner\executors\base.py", line 755, in __call__
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -     return callback(url, payload)
[task 2024-08-08T23:31:25.386Z] 23:31:25  WARNING -            ^^^^^^^^^^^^^^^^^^^^^^
[task 2024-08-08T23:31:25.387Z] 23:31:25  WARNING -   File "D:\task_172315873629958\build\tests\web-platform\tests\tools\wptrunner\wptrunner\executors\base.py", line 768, in process_action
[task 2024-08-08T23:31:25.387Z] 23:31:25  WARNING -     raise ValueError(f"Unknown action {action}") from e
[task 2024-08-08T23:31:25.387Z] 23:31:25  WARNING - ValueError: Unknown action bidi.session.subscribe
[task 2024-08-08T23:31:25.387Z] 23:31:25  WARNING - 
[task 2024-08-08T23:31:25.389Z] 23:31:25     INFO - TEST-ERROR | /infrastructure/webdriver/bidi/subscription.html | took 6787ms
[task 2024-08-08T23:31:25.389Z] 23:31:25     INFO - No more tests
[task 2024-08-08T23:31:25.392Z] 23:31:25     INFO - PID 7896 | 1723159885388	Marionette	INFO	Stopped listening on port 50995
[task 2024-08-08T23:31:27.533Z] 23:31:27     INFO - PID 7896 | [Parent 10192, IPC I/O Parent] WARNING: Process 10172 may be hanging at shutdown; will wait for up to 80000ms: file D:/task_172315426815759/build/src/ipc/chromium/src/chrome/common/process_watcher_win.cc:129
[task 2024-08-08T23:31:29.971Z] 23:31:29     INFO - PID 7896 | [Parent 10192, IPC I/O Parent] WARNING: Process 7732 may be hanging at shutdown; will wait for up to 77563ms: file D:/task_172315426815759/build/src/ipc/chromium/src/chrome/common/process_watcher_win.cc:129
[task 2024-08-08T23:31:29.988Z] 23:31:29     INFO - PID 7896 | [Parent 10192, IPC I/O Parent] WARNING: Process 564 may be hanging at shutdown; will wait for up to 77563ms: file D:/task_172315426815759/build/src/ipc/chromium/src/chrome/common/process_watcher_win.cc:129
[task 2024-08-08T23:31:31.020Z] 23:31:31     INFO - Browser exited with return code 0
[task 2024-08-08T23:31:31.023Z] 23:31:31     INFO - Closing logging queue
[task 2024-08-08T23:31:31.024Z] 23:31:31     INFO - queue closed
[task 2024-08-08T23:31:31.082Z] 23:31:31     INFO - SUITE-END | took 18s
[task 2024-08-08T23:31:31.084Z] 23:31:31     INFO - Got 0 unexpected results, with 0 unexpected passes
[task 2024-08-08T23:31:31.086Z] 23:31:31     INFO - wptserve Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Stopped http server on 127.0.0.1:8444
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Stopped http server on 127.0.0.1:8443
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Stopped http server on 127.0.0.1:8001
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Stopped http server on 127.0.0.1:8445
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
[task 2024-08-08T23:31:31.301Z] 23:31:31     INFO - wptserve Stopped http server on 127.0.0.1:8446

Comment 1

[Intermittent Failures Robot]

1 failures in 3459 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• windows11-64-2009-ccov-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2024-08-05&endday=2024-08-11&tree=all

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 3

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=474799965&repo=try

Comment 4

[Intermittent Failures Robot]

1 failures in 4860 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Platform and build breakdown:

• linux1804-64-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2024-09-16&endday=2024-09-22&tree=all

Comment 5

[Intermittent Failures Robot]

1 failures in 4679 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Platform and build breakdown:

• linux1804-64-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2024-10-07&endday=2024-10-13&tree=all

Comment 6

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 7

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=482638375&repo=mozilla-beta

Comment 8

[Intermittent Failures Robot]

1 failures in 4227 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 1

Platform and build breakdown:

• linux1804-32-shippable-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2024-11-11&endday=2024-11-17&tree=all

Comment 9

[Intermittent Failures Robot]

1 failures in 4722 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Platform and build breakdown:

• macosx1470-64: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2024-12-02&endday=2024-12-08&tree=all

Comment 10

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 11

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=491172300&repo=try

Comment 12

[Intermittent Failures Robot]

Summary

3 failures in 4035 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 3

Platform and build breakdown:

• linux1804-64-asan-qr: 1
  • opt: 1
• linux1804-64-qr: 1
  • opt: 1
• macosx1470-64: 1
  • opt: 1

Table

	no_variant
linux1804-64-asan-qr--/opt	1
linux1804-64-qr--/opt	1
macosx1470-64--/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-01-20&endday=2025-01-26&tree=all

Comment 13

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 14

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=519022453&repo=try

Comment 15

[Intermittent Failures Robot]

7 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 6
• mozilla-beta: 1

Table

	no_variant
linux2404-x86_64/asan	7

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-07-21&endday=2025-07-27&tree=all

Comment 16

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 17

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Table

	no_variant
linux2404-x86_64/asan	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-08-18&endday=2025-08-24&tree=all

Comment 18

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Table

	no_variant
linux2404-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-09-08&endday=2025-09-14&tree=all

Comment 19

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Table

	nofis
android-x86/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-09-15&endday=2025-09-21&tree=all

Comment 20

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Table

	nofis-noship
android-x86/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-09-29&endday=2025-10-05&tree=all

Comment 21

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=532331638&repo=try

Comment 22

[Intermittent Failures Robot]

4 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 4

Table

	no_variant
linux2404-x86_64/debug	1
windows11-x86_64/opt	3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-10-20&endday=2025-10-26&tree=all

Comment 23

[Intermittent Failures Robot]

2 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 2

Table

	no_variant
windows11-x86_64/debug	1
windows11-x86_64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-10-27&endday=2025-11-02&tree=all

Comment 24

[Intermittent Failures Robot]

2 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 2

Table

	no_variant	nofis
android-x86/debug		1
linux2404-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-11-03&endday=2025-11-09&tree=all

Comment 25

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Table

	no_variant
macosx1470-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-11-17&endday=2025-11-23&tree=all

Comment 26

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 27

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=540641508&repo=autoland

Comment 28

[Intermittent Failures Robot]

11 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 9
• try: 2

Table

	no_variant
linux2404-x86_64/debug	1
linux2404-x86_64/opt	1
linux2404-x86_64/tsan	1
macosx1470-x86_64/debug	1
macosx1470-x86_64/opt	3
windows11-x86/debug	1
windows11-x86/opt	1
windows11-x86_64/debug	1
windows11-x86_64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2025-12-15&endday=2025-12-21&tree=all

Comment 29

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 30

[Intermittent Failures Robot]

2 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1
• mozilla-central: 1

Table

	no_variant	nofis
android-x86_64/opt		1
windows11-x86/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2026-02-09&endday=2026-02-15&tree=all

Comment 31

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=549087742&repo=try

Comment 32

[Intermittent Failures Robot]

3 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 2
• mozilla-central: 1

Table

	no_variant	nofis
android-x86_64/opt		1
linux2404-x86_64/opt	1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2026-02-16&endday=2026-02-22&tree=all

Comment 33

[Intermittent Failures Robot]

5 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 4
• try: 1

Table

	no_variant	nofis	nofis-noship
android-x86_64/debug		1	1
android-x86_64/opt			1
linux2404-x86_64/debug	1
windows11-x86/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2026-02-23&endday=2026-03-01&tree=all

Comment 34

[Intermittent Failures Robot]

6 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1
• mozilla-beta: 1
• mozilla-esr140: 2
• mozilla-central: 2

Table

	no_variant	nofis-noship
android-x86_64/opt		2
linux1804-x86_64/opt	1
macosx1470-x86_64/opt	1
macosx1500-aarch64/opt	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2026-03-02&endday=2026-03-08&tree=all

Comment 35

[Intermittent Failures Robot]

7 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1
• mozilla-central: 2
• mozilla-beta: 4

Table

	no_variant	nofis
linux2404-x86_64/ccov	1
linux2404-x86_64/opt	1	1
windows11-x86_64/opt	4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2026-03-23&endday=2026-03-29&tree=all

Comment 36

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 1

Table

	no_variant
windows11-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1912364&startday=2026-03-30&endday=2026-04-05&tree=all

Comment 37

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.